Anti-channeling piston type compressor

Abstract

The utility model discloses an anti-channeling piston type compressor, which relates to the technical field of piston type compressors, and comprises a shell and a rear cover, the shell is detachably connected with the rear cover, a cylinder body is arranged in the shell, a main shaft is rotatably arranged in the middle of the cylinder body, the main shaft penetrates through one end of the shell and is fixedly provided with a belt wheel, and the outer end of the main shaft is sleeved with a sliding disc. A plurality of cylinder barrels are arranged on the cylinder body, a piston is arranged in each cylinder barrel in a sliding mode, the pistons form compression chambers in the cylinder barrels, and the multiple pistons are all connected with the sliding disc; according to the anti-channeling piston type compressor provided by the utility model, the anti-channeling groove is formed, the bearing and the top spring are arranged in the anti-channeling groove, the channeling force of the main shaft can be transmitted to the bearing when the main shaft rotates and drives a plurality of pistons to reciprocate, and the top spring can be compressed by the channeling force of the bearing; the counter-acting force generated after the top spring is compressed can counteract the play force of the main shaft, the play phenomenon of the piston type compressor is reduced, the NVH value of a vehicle is reduced, and vibration and noise are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of piston compressors, in particular to an anti-channeling piston compressor. Background Art

[0002] Piston compressors are crucial for automotive air conditioning and refrigeration applications. They rely on the reciprocating motion of a piston within a cylinder to change the working volume, thereby reducing the volume of gas and increasing its pressure. They are positive displacement compressors, also known as reciprocating piston compressors or reciprocating compressors.

[0003] During the rotation of the main shaft and when driving multiple pistons to reciprocate, piston compressors experience axial instability, which can cause them to move. This movement increases the vehicle's NVH (Non-Volatile, Harshness, Heating, and Hurry) value, meaning both noise and vibration increase. Existing piston compressors typically address this movement by leaving a clearance for the main shaft. However, this approach results in low assembly efficiency during the assembly of the piston compressor. Utility Model Content

[0004] In view of the fact that the above-mentioned existing piston compressors usually reserve a clearance for movement of the main shaft to solve the movement problem, this treatment results in low assembly efficiency when the piston compressor is assembled, and the present utility model is proposed.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an anti-slip piston compressor, which includes a shell and a rear cover, and the shell and the rear cover are detachably connected. A cylinder body is provided in the shell, and a main shaft is rotatably provided in the middle of the cylinder body. The main shaft passes through one end of the shell and is fixed with a pulley. It is characterized in that: the outer end of the main shaft is sleeved with a sliding plate, and the cylinder body is provided with multiple cylinder barrels, each of which is slidably provided with a piston, and the piston forms a compression chamber in the cylinder barrel. The multiple pistons are all connected to the sliding plate, and an anti-slip groove is provided at the end of the cylinder body away from the pulley, and a bearing is slidably provided in the anti-slip groove. The end of the main shaft is connected to the inner ring of the bearing, and the main shaft rotates through the cylinder body through the bearing. A valve plate is provided at the end of the cylinder body away from the pulley, and a top spring is provided between the valve plate and the bearing. The top spring is arranged in the anti-slip groove, and the two ends of the top spring are respectively in contact with the outer ring of the bearing and the valve plate.

[0006] Preferably, the bearing and the anti-channeling groove are clearance fit.

[0007] Preferably, the bearing is a deep groove ball bearing.

[0008] Preferably, the bearing, main shaft, anti-channeling groove and top spring are coaxially arranged.

[0009] Preferably, the top spring is installed in the anti-channeling groove through the valve plate.

[0010] Preferably, the sliding plate can rotate in the housing through the rotation of the main shaft, and the inclination angle of the sliding plate relative to a plane perpendicular to the main shaft is constant.

[0011] Beneficial effects of the utility model:

[0012] 1. By setting up an anti-channeling groove, in which bearings and top springs are arranged, the main shaft rotates and the axial instability causes itself to channel when driving multiple pistons to reciprocate. The force of the main shaft channeling will be transmitted to the bearing, and the bearing channeling will compress the top spring. The reaction force after the top spring is compressed will offset the force of the main shaft channeling, thereby reducing the occurrence of channeling of the piston compressor, reducing the vehicle NVH value, and reducing vibration and noise.

[0013] 2. The top spring is installed in the anti-channeling groove by arranging the valve plate, which simplifies the assembly process and improves the assembly efficiency during the production of the piston compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the partial structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the partial structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the cylinder structure of the utility model.

[0019] Description of reference numerals:

[0020] 1. Housing; 2. Rear cover; 3. Cylinder block; 4. Main shaft; 5. Sliding plate; 6. Cylinder barrel; 7. Piston; 8. Anti-channeling groove; 9. Bearing; 10. Valve plate; 11. Top spring; 12. Pulley. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1-4, which is an embodiment of the present utility model, provides an anti-channeling piston compressor, which includes a shell 1 and a rear cover 2, which are detachably connected. A cylinder body 3 is provided in the shell 1, and a main shaft 4 is rotatably provided in the middle of the cylinder body 3. The main shaft 4 passes through one end of the shell 1 and is fixed with a pulley 12. A sliding plate 5 is provided on the outer end of the main shaft 4. A plurality of cylinder barrels 6 are provided on the cylinder body 3, and a piston 7 is slidably provided in each cylinder barrel 6. The piston 7 forms a compression chamber in the cylinder barrel 6. The plurality of pistons 7 are connected to the sliding plate 5. An anti-channeling groove 8 is provided at the end of the cylinder body 3 away from the pulley 12, and a bearing 9 is slidably provided in the anti-channeling groove 8. The bearing 9 is a deep groove ball bearing. The end of the main shaft 4 is connected to the inner ring of the bearing 9. The main shaft 4 rotates through the bearing 9 and passes through the cylinder body 3. A valve plate 10 is provided at the end of the cylinder body 3 away from the pulley 12. A top spring 11 is provided between the valve plate 10 and the bearing 9. The top spring 11 is provided in the anti-channeling groove 8. The two ends of the top spring 11 are in contact with the outer ring of the bearing 9 and the valve plate 10 respectively. The bearing 9 and the anti-channeling groove 8 are clearance-fitted. The bearing 9, the main shaft 4, the anti-channeling groove 8 and the top spring 11 are coaxially arranged. The top spring 11 is installed in the anti-channeling groove 8 through the valve plate 10. The sliding plate 5 can rotate in the housing 1 through the rotation of the main shaft 4, and the inclination angle of the sliding plate 5 relative to the plane perpendicular to the main shaft 4 is constant.

[0023] During use, the rotation of the pulley 12 drives the main shaft 4 to rotate, and the rotation of the main shaft 4 drives the sliding plate 5 to rotate in the housing 1. Since the inclination angle of the sliding plate 5 relative to the plane perpendicular to the main shaft 4 is constant, the sliding plate 5 will drive different pistons 7 to reciprocate in the cylinder 6 in turn during the rotation. The rotation of the main shaft 4 and the axial instability when driving multiple pistons 7 to reciprocate will cause itself to move. At this time, the force of the movement of the main shaft 4 will be transmitted to the bearing 9, and the movement of the bearing 9 will compress the top spring 11. The reaction force of the compressed top spring 11 will offset the force of the movement of the main shaft 4, reducing the occurrence of the piston compressor movement phenomenon, reducing the vehicle NVH value, and reducing vibration and noise. At the same time, the valve plate 10 is used to install the top spring 11 in the anti-movement groove 8. The assembly process is simple, which improves the assembly efficiency during the production of the piston compressor.

[0024] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An anti-slip piston compressor, comprising a housing (1) and a rear cover (2), wherein the housing (1) and the rear cover (2) are detachably connected, a cylinder (3) is provided in the housing (1), a main shaft (4) is rotatably provided in the middle of the cylinder (3), the main shaft (4) passes through one end of the housing (1) and is fixed with a pulley (12), and is characterized in that: The outer end sleeve of the main shaft (4) is provided with a sliding plate (5), and a plurality of cylinder barrels (6) are provided on the cylinder body (3). A piston (7) is slidably provided in each cylinder barrel (6). The piston (7) forms a compression chamber in the cylinder barrel (6). The plurality of pistons (7) are connected to the sliding plate (5). An anti-channeling groove (8) is provided at one end of the cylinder body (3) away from the pulley (12). A bearing (9) is slidably provided in the anti-channeling groove (8). The end of the main shaft (4) is connected to the inner ring of the bearing (9). The main shaft (4) rotates through the cylinder body (3) through the bearing (9). A valve plate (10) is provided at one end of the cylinder body (3) away from the pulley (12). A top spring (11) is provided between the valve plate (10) and the bearing (9). The top spring (11) is provided in the anti-channeling groove (8). The two ends of the top spring (11) are in contact with the outer ring of the bearing (9) and the valve plate (10) respectively.

2. The anti-channeling piston compressor according to claim 1, characterized in that: The bearing (9) and the anti-channeling groove (8) are clearance-fitted.

3. The anti-channeling piston compressor according to claim 2, characterized in that: The bearing (9) is a deep groove ball bearing.

4. The anti-channeling piston compressor according to claim 1, characterized in that: The bearing (9), the main shaft (4), the anti-channeling groove (8) and the top spring (11) are coaxially arranged.

5. The anti-channeling piston compressor according to claim 1, characterized in that: The top spring (11) is installed in the anti-channeling groove (8) through the valve plate (10).

6. The anti-channeling piston compressor according to claim 1, characterized in that: The sliding plate (5) can rotate in the housing (1) through the rotation of the main shaft (4), and the inclination angle of the sliding plate (5) relative to the plane perpendicular to the main shaft (4) is constant.

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